Decorative light string



FIG. 1 is a perspective view of a decorative light string, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line disclosure and the areas between the brackets indicating that the article is shown broken away depict portions of the decorative light string which forms no part of the claimed design. 

CLAIM We claim the ornamental design for a decorative light string, as shown and described. 